Window-lock.



No. 789,568. I PATENTED MAY 9, 1905. L. W. ROB a; L. J. BONAR.

WINDOW LOCK.

APPLICATION FILED JAN. 9, 1904.

Witnesses lilivririen rariee Patented May 9, 1905.

MNET ri icn.

LEWIS \V. ROE AND LElVlS J. BONAR, OF MANSFIELD, OHIO.

WlNIDOWflLOCM.

SIPiEiGIFICATION forming part of Letters Patent No. 789,568, dated May9, 1905.

Application filed January 9, 1904. Serial No. 188,335.

To all whom it Hui/y concern.-

Be it known that we, LEWIS TV. Ron and LnwIs J. BoNAR, citizens of theUnited States of America, and residents of Mansfield, in the county ofRichland and State of Ohio, have invented certain new and usefulImprovements in VVindow-Locks, of which the following is aspecification.

Our invention relates to window-locks which are adapted to be secured tothe sash in such a manner as to conceal the locking mechanism from theexterior of the sash.

The objects of our improvements are, first, to provide a simple andeffective means of locking the sash; second, to afford facilities forforcing the sash in contact with the sides and upper and lower portionof the windowframe and at the same time bringing the faces of themidrails of theupper and lower sashes in close contact, whereby allmovement or vibration of the sashes is obviated when locked. l Ve attainthese and other objects by the mechanism illustrated in the accompanyingdrawings, in which Figure 1 is a longitudinal side view showing acombination sleeve and plate with keybolt fitted to the inner peripheryof the sleeve and having a bifurcated th um b-lever attached to one end.Fig. 2 is a top view of the plate, which is made integral with thesleeve, showing a recess formed therein, and top view of thumb-lever asit appears when the windowsashes are locked together. Fig. 3 is a topview of the cam-plate, showing an elongated slot provided therein. Fig.i is a bottom view of the cam-plate, showing the cam extending from theface thereof and the locking-pin stop. Fig. 5 is a cross-sectional viewtaken on the line :1; of Fig. i, showing an inclined plane formed on thecam-plate, the key-bolt and locking-pinbeing omitted.

in constructing our lock we provide a sleeve 1, having an enlargedcircular portion 2 and at one end a projecting plate 3, made integraltherewith. A key-bolt 4, having a collar 5 and flattened poi tions 6formed on one end, is litted to theinner periphery of the sleeve and isadapted to slide or reciprocate therein. The outer periphery of thesleeve is fitted to a suitable aperture provided in the midrail of thelower sash. The sash is counterbored and mortised to receive theenlarged portion or chamber 2 and plate of the sleeve, so as to leavethe plate 3 flush with the surface of the sash.

A locking-pin 7 is fitted to the key-bolt at right angles with its axis.A thumb-lever 8, having a bifurcated projecting portion 9 adapted to litthe flat portion 6 of the keybolt, is pivotal] y secured thereto bymeans of the pin 11. The cam-plate 12 is countersunk in and secured tothe midrail of the upper sash so as to bring the elongated aperture 13in direct alincment with the key-bolt when it is desired to lock thewindow. A slot 14 is formed in the sleeve at right angles therewith andextending longitudinally thereof, the slot 14 coinciding with a slotformed in the sash and being adapted'to receive the locking-pin 7 whenit is withdrawn from the camplate. The periphery of the pin contactswith the end of the slot 10, which forms astop regulating the outwardsliding movement of the key-bolt and keeping the projecting portion ofthe keybolt within the plane of the sash when it is desired to raise orlower the sash, the collar 5 limiting the inward movement of the bolt.hen it is desired to lock the sash, the key-bolt is forced into theelongated slot provided in the cam-plate, leaving the locking-pinprotruding through and beyond the walls of the elongated slot. Thekey-bolt is then rotated by means of the thumb-lever, and the peripheryof the lockingpin, which extends through the slot of the cam-plate, isbrought in contact with the inner surface of an inclined plane 15,forming a portion of the base of the plate 12, and at the same time theend of the lockingpin is brought in contact with the cam 16, extendingfrom the surface of the plate 12. As the key-bolt is rotated, bringingthe locking-pin in contact with the inclined plane, the faces of themidrails are l.)rought together, and the end of the pin contacting withthe cam transmits a sidewise and longitudinal movement to the sashes,forcing the stiles of the sashes against the sides and upper and lowerends of the window-frame.

\Vhen the locking-pin is forced forward, its movement is regulated bythe collarll. The

enlarged portion or chamber 2 of the sleeve is counterbored, as at 5, soas to form a bearing for the collar, providing a means of leaving theend of the key-bolt flush with the face of the sash when locked. Aportion of the plate 3, as at 17, is cut away to receive the thumb-leverfor the purpose of keeping it Within the plane of the sash when thewindow is locked. By this construction it will be observed that themoment the thumb piece or lever 8 is released after the device islockedsuch thumb-piece will swing downwardly and be received in therecess formed between the edges 17 17 of the cut-away portion of theplate, which edges serve as stops to prevent the rotation of thekey-bolt by engaging the thumb-piece 8, whereby the accidental unlockingof the sashes is prevented, nor can it be rotated from the outside.

It will be noted that when the key-bolt is pressed forward and rotated,it performs three separate and distinct functions, to wit: The contactof the periphery of the locking-pin with the inclined plane brings theadjacent faces of the midrails together, and the engagement of the endof the pin 7 with the cam-rib 16 forces the stiles of the sashes incontact with the sides and upper and lower ends of the windo frame andat the same time securely locks the window, by means of which allshaking, rattling, vibration, and noise which are incident to anordinary window is obviated.

Having fully described our invention, what we desire to secure byLetters Patent is 1. A window-fastener comprisinga sleeve, a boltinserted therein and a cam-plate, the adjacent end of the bolt receivedwithin the cam-plate, a pin carried by the bolt and receivable withinthe cam-plate, an inclined surface with which the side of the pinengages and a cam-surface with which the end of the pin engages.

2. In a window-fastener, the combination with a key-bolt, and alocking-pin carried thereby, of a disk plate provided with an inclinedsurface engaged by the side of the pin and a section of a spiral riblocated perpendicularly to the inclined surface and engaged by the endof the pin.

3. In a Window-fastener, the combination U with a suitably-supportedbolt, of a disk plate having an elongated closed aperture extendingdiametrically across the plate, the end of the bolt extending throughthe plate centrally of the aperture, the inner face of the plateprovidedwith a gradual incline, an arc-shaped cam-rib carried by theplate and a pin mounted on the bolt, the pin adapted to engage theincline and cam-rib simultaneously.

4:. The combination with a window-casing and a plurality of sashes, of awindow-fastener comprising a bolt carried by one of the sashes, alateral projection carried by the bolt, a keeper mounted upon theremaining sash, the keeper adapted to receive the projection, meanscarried by the keeper and engaged by the projection for forcing thesashes in opposite lateral directions and subsequently in oppositelongitudinal directions, and means likewise engaged by the projectionfor simultaneously drawing the sashes toward one another during theirlateral and longitudinal movement.

5. The combination With a window-casing and a plurality of sashes, of awindow-fastener comprising a bolt carried by one of the sashes, alateral projection carried by the bolt, a keeper mounted upon theremaining sash, the keeper adapted to receive the projection, and meanscarried by the keeper and engaged by the projection for forcing thesashes in opposite lateral directions and subsequently in oppositelongitudinal directions. Signed at Mansfield, Ohio, this 30th day ofNovember, 1903.

LEWIS WV. ROE. LEWIS J. BONAR. Witnesses:

JOHN H. Cass, H. E. BELL.

